Radiator for warm-air furnaces



Oct. 29, 1929.

J. P. KOLLA RADIATOR FOR WARM AIR FURNACES Filed 00T', 24. 1927 INVENTOR yA TTORNE YS Patented Oct. 29, 1929 PATENT OFFICE JOI-IN P. KOLLA, OF HOLLAND, MICHIGAN, ASSIGNOR TO HOLLAND FURNACE COM- PANY, F HOLLAND, MICHIGAN RADIATOR FOR WARM-AIR FURNACES Application led October 24, 1927. Serial No. 228,246.

lIhis invention relates particularly to improvements in one-piece radiators for warm air furnaces.

The objects of the invention are:

First, to provide a one-piece radiator of large capacity 4rand high efliciency in its radiation.

Qecond, to pi Ovide such a structure with a safety relief in the event of an explosion within the furnace.

Objects pertaining to details and economies of my invention will definitely appear from the description to follow.

I accomplish the objects of my invention by the devices and means described in the following specification. The invention is clear ly defined and pointed out in the claims.

A device embodying my invention is clearly illustrated in the accompanying drawing forming a part of this application, in which:

Fig. 1 is a detail elevation view of a furnace embodying the features of my invention, the radiator being shown in section on line 1-1 of Fig. 2.

2 is a detail horizontal sectional view through the radiator, showing its contour, taken on the plane of line 2 2 of Fig. 1.

The parts will be identified by their numerals of' reference which are the same in all views.

1 is the usual casing of a furnace. 2 is the upper part of' the combustion chamber. 3 is .my improved one-piece radiator. It has a central dome 31 around which is a projecting flange 32 forming a joint with the top opening of the said combustion chamber 2. Leading spirally from the central dome 31 is the passage 33 of gradually lessening cross sectional dimension until it emerges at the smoke pipe J connection 34, which is contracted slightly downwardly at the discharge end as indicated. .et the front is a vent passage 35 closed by the trap door 36 which is hinged at 37 and rests by gravity against the inclined flange 38,

see particularly Fig. 1.

`With this construction it will be observed that the combustion gases are delivered upwardly from the combustion chamber into the comparatively large central dome from which they circulate spirally in a spiral passage diminishing in cross section to the discharge opening which is slightly restricted and slightly lower than the said passage. Also that the smoke discharge connection is supplied with a vent 35 so that in the event of an explosion within the furnace the trap door 86 opens automatically and relieves the pressure.

The structure can be somewhat modified in detail. I desire to claim the same specifically and also broadly as pointed out in the appended claims.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

1. In a one-piece radiator for a warm air furnace, the combination of a central domelike part with flanged joint connecting at the top opening of the combustion chamber, a spiral passage leading from the central domelike part in spaced relation thereto and with constantly diminishing cross section and with an inclination downwardly to a restricted smoke discharge, a vent passage leading therefrom having an inclined flange opening and having a trap door hinged at its top and resting against said flange, eoacting as specified.

2. In a one-piece radiator for a warm air furnace, the combination of a central domelike part with flanged joint connecting at the top opening of the combustion chamber, a spiral passage leading from the central domelike part in spaced relation thereto with constantly diminishing cross section and with an inclination downwardly to a restricted smoke discharge, coacting as specified.

3. In a one-piece radiator for a warm air furnace, the combination of a central domelike part with flanged joint connecting at the top opening of the combustion chamber, a spiral passage leading from the central domelike part in spaced relation thereto and with an inclination downwardly to a reduced smoke discharge, coacting as specified.

In witness whereof I have hereunto set my hand.

JOHN l?. KOLLA. 

